What you are viewing is Tecsun R-203T Handheld Portable multi-wave band radio, which supports AM/FM.This portable multi-wave band radio will fit easily into your shirt or jacket pocket! Stylish design of this multi-wave band radio takes up a minimum of space on the nightstand, desk or dresser. Just take this digital pocket radio when you travel. You can pick up your favorite program anywhere! Built-in high quality speaker, the portable FM radio can provide you high sound quality, you can clearly hear the voice even do not use earphone. Besides, make of high quality material, this f multi-wave band radio is durable for long time use. Great item we provide you, do not miss it!

With high technology, this multi-wave band radio has a higher sensitivity and stability

This multi-wave band radio can turn off automatically after 1-2 hour if you set

This multi-wave band radio can memorize programs you like

With fashion look, this AM FM radio can show your taste

This multi-wave band radio is made of high quality material, durable and it can last for a long time

You can search the program by hand or input the frequency range

With this multi-wave band radio, you can also scan the program saved before

Details:

This portable FM radio has a higher sensitivity and stability, enjoy FM progames with it

Portable multi-wave band radio, small in size, you can take it with you wherever you go

Made of high quality material, adopt advanced technology, the Pocket Radio is durable for long time use

How Does FM Radio Work?

Sound Waves and Frequency:

All sound energy is in the form of a wave. The frequency of a wave is the measurement of the number of cycles that it undergoes in a given time frame. Hertz is a measurement of frequency that depicts the number of wave cycles per second. FM signals are measured in megahertz so an FM signal of 97.5 relates to 97,500,000 waves/second

Frequency Modulation:

FM actually stands for Frequency Modulation. FM signals use various frequency levels that reproduce the sound of the originating source (i.e. music). You've probably noticed that FM contains all your music channels while AM radio is limited to news and talk programming. This is because frequency modulation allows for the transmission of the greater range of frequencies (high and low sounds) contained within music.

Transmission:

FM radio originates at the broadcast source (radio stations). These stations use large antennas to send out their broadcast signal. Electrical charges are pushed up and down the broadcast antenna at a rate that relates to the carrier frequency. The movement of electrical charges creates an electromagnetic field which sends out

electromagnetic waves. The waves are sent in all directions. Carrier waves are sent out at a frequency that can be detected by your antenna (the radio station number). They carry sound information that includes the different frequencies of the original broadcast

Reception:

The electromagnetic carrier wave travels through the atmosphere until it is picked up by a receiver antenna (i.e. your car radio antenna). At this time the wave causes electrical charges to be pushed up and down your antenna and on into your receiver. The receiver decodes the modulated frequency information and then passes it to the speakers

Processing and Hearing:

The speaker vibrates according to the processed frequencies and pushes air molecules that recreate the original sound waves and pass them to your ears. You hear the music or talk that was sent in the original broadcast. Since electricity works at the speed of light, this process, from broadcast to listener, is instantaneous

Loss of Signal:

You've probably noticed, particularly if you listen to FM radio in the car, that eventually you will lose your signal. The simple reason for this is that the short wavelength of FM radio waves cause them to travel in straight lines. The earth, however, is curved. Therefore, as the earth curves, FM waves continue in a straight line into the atmosphere and are no longer receptible. The short waves are also affected by obstacles like mountains

How to Build an FM Radio?

A radio provides signal transmission via the use of electromagnetic waves. The frequencies a radio uses are lower than those of visible light. A German scientist by the name of Heinrich Hertz was the first to detect and product radio frequencies, in 1888. Radios are still in wide use, even in this internet age.Building a simple FM radio only requires a small amount of time and materials. Although this radio is fully functioning, it isn't very pretty

Solder the ferrite loop to the variable capacitor. Only solder the ferrite wire that is painted black. Make sure you are soldering the ferrite loop to the center lead of the variable capacitor

Solder the unpainted wire of the ferrite loop to the variable capacitor's right lead

Solder the germanium diode to the same right lead of the variable capacitor as the unpainted wire of the ferrite loop. Only connect one end of the germanium diode

Solder one end of the piezoelectric wire to the other (free) end of the germanium diode

Solder the other end of the piezoelectric wire to the variable capacitor's center lead

Take note of the red-painted wire of the ferrite coil. Use an alligator clip to attach it to the antenna wire

Use the remaining alligator clip lead to attach the green-painted wire of the ferrite coil to a good ground. You can use a cold water pipe for the ground

Package Included:

1 x Radio

If the order has not been shipped; please contact DinoDirect Live Support for order cancellation.You will get your refund within 24 hours.

If the order has already been shipped; you may return the item to us postmarked within 30 calendar days of delivery. Before that, please contact our Live Support to inform that.
In that case we will refund you the payment excluding actual shipping fees already incurred.

If the item is defective, please contact DinoDirect Live Support and send an email to us at cs-center@dinodirect.com attached an image or video file clearly showing the defect of the product. And we will give you a response within 24 hours whether we will resend the item or refund the payment to you for compensation.

For customization, please consider carefully before ordering.Because we do not accept return and replacement.

DinoDirect, the largest online store for cool gadgets and colorful household supplies, would like to provide more rewards to our loyal customers. Wholesale price for all the products has been launched. Other promotions on DinoDirect are not to be combined with it.

I'm really happy with this radio. I love the Yankees but can't always sit in front of the television during games. It allows me to keep up with the action while I'm shopping, running errands, etc. I use a basic one-ear earphone with it and I've only had minimal reception problems in certain areas. Overall, it works great. FYI -- It is a mono unit and will only play in one side of a set of earbuds.

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David Bank

Bought this item on

04-15-2011

Pocket AM/FM Radio

00:00:00 04-15-2011

This radio is perfect in size, sound, and a good travel buddy. It fits nicely in my beach bag, travel bag, a radio that is easily accessible on the fishing pier or hiking in the mountains.

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Melissa Woodbury

Bought this item on

03-27-2011

excellent radio

00:00:00 03-27-2011

This is an excellent radio. It looks good, easy to tune and adjust volume and battery life is very good.

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Buster Greene

Bought this item on

03-20-2011

The little radio you can't find anymore

00:00:00 03-20-2011

This radio is exactly what I have been looking for and couldn't find anywhere. It's a perfect size, and the reception is outstanding. So glad I found it on Amazon...as they are no longer carried in stores.

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Aaron Stewart

Bought this item on

03-08-2011

Good little guy!

00:00:00 03-08-2011

Great reception. Left ear out only. Volume very sensitive, goes from zero to loud in the haed phones but flows ok through speaker. Only complaint is earphone jack is on the side, would fit better in pocket if it was on top or bottom. Recommend!

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Elizabeth M Smith

Bought this item on

02-21-2011

Great little radio

00:00:00 02-21-2011

I've had this radio a few weeks now, and I love it! looks good sounds
<br/>good and I live in a rural town, sound is NOT always great here but this little radio comes alive. Reminds me of my teenage days~~ you will not be dissappointed

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Chandra Benner

Bought this item on

02-14-2011

Great bang for your buck

00:00:00 02-14-2011

Sound quality is great. And all features are just about what its expected. This is the best product in this criteria.
<br/>The speaker volume is amazingly loud. My one con is its bulkier than I thought it was gonna be but ill live

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Erin Tuttle

Bought this item on

01-31-2011

Great radio for the price

00:00:00 01-31-2011

This is a great little radio for the price. It's nice and small but still sounds pretty good. I was surprised at the quality of the reception. I might get one or two more. Couldn't be happier with it.
<br/>
<br/>In case you didn't notice: it's battery-power only; no plug in option.
<br/>
<br/>Recommended.

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Return Policy

• If the order has not been shipped; please contact DinoDirect Live Support for order cancellation.You will get your refund within 24 hours.
• If the order has already been shipped; you may return the item to us postmarked within 30 calendar days of delivery. Please contact our Live Support to inform that.
• Please contact Live Chat or click here to learn more return policy.